3G 2100 femtocell for O2 only, 2832 also popped up for me and is suspected to be a femtocell in another area of the store.
No data connection for me when testing (despite showing HSPA on two devices, Pixel 6 Pro and Redmi Note 10 Pro). Also couldn't send a test message to myself.
Site will likely be gone in 2025 as O2 shuts off 3G services. Hopefully a 4G micro is added here as its replacement but unlikely.